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R_RATELIMIT(0.00)[to_ip_from(RLk469idygq4891mojaqehp6ty)]; RCVD_TLS_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.de:+]; TO_DN_SOME(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com,gmx.de,mail.ru] X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Action: no action X-Spam-Score: -3.01 X-Spam-Flag: NO Add struct fb_info.lcd_dev for fbdev drivers to store a reference to their lcd device. Update the lcd's fb_notifier_callback() to test for this field. The lcd module can now detect if an lcd device belongs to an fbdev device. This works similar to the bl_dev for backlights and will allow for the removal of the check_fb callback from several fbdev driver's lcd devices. Signed-off-by: Thomas Zimmermann --- drivers/video/backlight/lcd.c | 3 +++ include/linux/fb.h | 13 +++++++++++++ 2 files changed, 16 insertions(+) diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c index 0cd0fa1b24f9..43a6752ec27f 100644 --- a/drivers/video/backlight/lcd.c +++ b/drivers/video/backlight/lcd.c @@ -30,6 +30,7 @@ static int fb_notifier_callback(struct notifier_block *self, struct lcd_device *ld; struct fb_event *evdata = data; struct fb_info *info = evdata->info; + struct lcd_device *fb_lcd = fb_lcd_device(info); ld = container_of(self, struct lcd_device, fb_notif); mutex_lock(&ld->ops_lock); @@ -38,6 +39,8 @@ static int fb_notifier_callback(struct notifier_block *self, goto out; if (ld->ops->check_fb && !ld->ops->check_fb(ld, evdata->info)) goto out; + if (fb_lcd && fb_lcd != ld) + goto out; if (event == FB_EVENT_BLANK) { if (ld->ops->set_power) diff --git a/include/linux/fb.h b/include/linux/fb.h index 865dad03e73e..bf1893616e9c 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -21,6 +21,7 @@ struct fb_info; struct file; struct i2c_adapter; struct inode; +struct lcd_device; struct module; struct notifier_block; struct page; @@ -480,6 +481,13 @@ struct fb_info { struct mutex bl_curve_mutex; u8 bl_curve[FB_BACKLIGHT_LEVELS]; #endif + + /* + * Assigned LCD device; set before framebuffer + * registration, remove after unregister + */ + struct lcd_device *lcd_dev; + #ifdef CONFIG_FB_DEFERRED_IO struct delayed_work deferred_work; unsigned long npagerefs; @@ -753,6 +761,11 @@ static inline struct backlight_device *fb_bl_device(struct fb_info *info) } #endif +static inline struct lcd_device *fb_lcd_device(struct fb_info *info) +{ + return info->lcd_dev; +} + /* fbmon.c */ #define FB_MAXTIMINGS 0 #define FB_VSYNCTIMINGS 1